<template>
 <div>
   <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
     <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">
            添加角色
          </el-button>
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
        <template slot-scope="scope">
          <el-row :class="['bdbottom',i1 ===0 ? 'bdtop':'','vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
            <!-- 渲染一级 -->
            <el-col :span="5">
             <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
             <i class="el-icon-caret-right"></i>
            </el-col>
            <!-- 渲染二级和三级 -->
            <el-col :span="19">
              <!-- 通过for循环 嵌套渲染二级权限 -->
              <el-row :class="['bdtop',i2 ===0 ? '':'bdtop','vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                <el-col :span="6">
                <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
                </el-col>
                 <el-col :span="18">
                   <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row, item3.id)">{{item3.authName}}</el-tag>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
          <pre>{{scope.row}}</pre>
        </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#">
        </el-table-column>
         <el-table-column label="角色名称" prop="roleName">
        </el-table-column>
        <el-table-column label="角色描述" prop="roleDesc">
        </el-table-column>
        <el-table-column label="操作" width="300px">
         <template slot-scope="scope">
           <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            >
            </el-button>
            <!-- 删除 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 分配 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
           >
              <el-button type="warning" icon="el-icon-setting" size="mini"  @click="showSetRightDialog(scope.row)">
              </el-button>
            </el-tooltip>
         </template>
        </el-table-column>
      </el-table>
       <!-- 分页区 -->
      <!-- <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination> -->
       <!-- 弹窗 -->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!-- 内容主题区 -->
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormReF"
          label-width="80px"
        >
          <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="addForm.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="addForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改用户对话框 -->
      <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <el-form
          ref="editFormRef"
          :model="editForm"
          :rules="editFormRules"
          label-width="80px"
        >
          <el-form-item label="角色名称">
            <el-input v-model="editForm.roleName" disabled></el-input>
          </el-form-item>
          <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="editForm.roleDesc"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配权限对话框 -->
      <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setclose">
  <!-- 树形控件 -->
  <el-tree :data="rightslist" :props="TreeProps" show-checkbox node-key="id" default-expand-all="true" :default-expanded-keys="defkeys" ref="treeref"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allot">确 定</el-button>
  </span>
</el-dialog>
    </el-card>
 </div>
</template>
<script>
export default {
  data() {
    return {
      // 所有角色列表
      roleList: [],
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      // 添加表单验证规则
      addFormRules: {
        roleName: [
          { required: true, message: '请输入角色名', trigger: 'blur' },
          {
            min: 2,
            max: 10,
            message: '用户名长度在 2 到 10 个字符',
            trigger: 'blur'
          }
        ],
        roleDesc: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 2,
            max: 15,
            message: '用户名长度在 2 到 15 个字符',
            trigger: 'blur'
          }
        ]
      },
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示
        pagesize: 2
      },
      total: 0,
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
      },
      // 控制分配权限的对话框
      setRightDialogVisible: false,
      // 所有权限数据
      rightslist: [],
      // 树形控件的绑定
      TreeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中节点ID值
      defkeys: [],
      // 当前即将分配权限的ID
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取所有权限列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.roleList = res.data
      this.total = res.data.total
      console.log(this.roleList)
    },
    // 点击按钮添加新用户
    addUser() {
      this.$refs.addFormReF.validate(async (valid) => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏添加弹窗
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getRolesList()
      })
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormReF.resetFields()
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getRolesList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getRolesList()
    },
    // 修改用户
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        this.$message.error('111')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户请求
        const { data: res } = await this.$http.put('roles/' + this.editForm.roleId, { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户失败')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新用户成功')
      })
    },
    // 根据ID删除用户信息
    async removeUserById(id) {
      // 弹框询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除则为字符串 confirm
      // 如果用户确认删除则为字符串 cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除用户')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getRolesList()
    },
    // 根据id删除对应权限
    async removeRightById(role, rightId) {
    // 弹框询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除则为字符串 confirm
      // 如果用户确认删除则为字符串 cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      role.children = res.data
      // this.getRolesList()
    },
    // 分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限失败')
      }
      // 获取到的权限数据保存到data中
      this.rightslist = res.data
      // this.$message.success('获取权限成功')
      // 递归获取三级节点的ID
      this.getLeafKeys(role, this.defkeys)
      this.setRightDialogVisible = true
    },
    // 通过递归形式 获取角色下所有的三级权限ID 并保存 defkeys
    getLeafKeys(node, arr) {
      if (!node.children) {
        // 如果当前node节点不包含children属性 则是三级节点
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setclose() {
      this.defkeys = []
    },
    // 点击为角色分配权限
    async allot() {
      const keys = [
        ...this.$refs.treeref.getCheckedKeys(),
        ...this.$refs.treeref.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag{
  margin: 7px;
}
.bdtop{
  border-top: 1px solid #eee;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.vcenter{
  display: flex;
  align-items: center;
}
</style>
